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          <a href="./Test::Builder::IO::Scalar.html">Test::Builder::IO::Scalar</a>
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            (<a href="./Test::Builder::IO::Scalar.txt">source</a>,
            <a href="https://metacpan.org/pod/Test::Builder::IO::Scalar">CPAN</a>)
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            <div id="moduleversion">version 2.114</div>
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        <h1><a id="toc">CONTENTS</a></h1>
                  <ul>
              <li>
                <a class="text-decoration-none" href="./Test::Builder::IO::Scalar.html#NAME">NAME</a>
              </li>
              <li>
                <a class="text-decoration-none" href="./Test::Builder::IO::Scalar.html#DESCRIPTION">DESCRIPTION</a>
              </li>
              <li>
                <a class="text-decoration-none" href="./Test::Builder::IO::Scalar.html#COPYRIGHT-and-LICENSE">COPYRIGHT and LICENSE</a>
                            <ul>
              <li>
                <a class="text-decoration-none" href="./Test::Builder::IO::Scalar.html#Construction">Construction</a>
              </li>
              <li>
                <a class="text-decoration-none" href="./Test::Builder::IO::Scalar.html#Input-and-output">Input and output</a>
              </li>
              <li>
                <a class="text-decoration-none" href="./Test::Builder::IO::Scalar.html#Seeking/telling-and-other-attributes">Seeking/telling and other attributes</a>
              </li>
          </ul>

              </li>
              <li>
                <a class="text-decoration-none" href="./Test::Builder::IO::Scalar.html#WARNINGS">WARNINGS</a>
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              <li>
                <a class="text-decoration-none" href="./Test::Builder::IO::Scalar.html#VERSION">VERSION</a>
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              <li>
                <a class="text-decoration-none" href="./Test::Builder::IO::Scalar.html#AUTHORS">AUTHORS</a>
                            <ul>
              <li>
                <a class="text-decoration-none" href="./Test::Builder::IO::Scalar.html#Primary-Maintainer">Primary Maintainer</a>
              </li>
              <li>
                <a class="text-decoration-none" href="./Test::Builder::IO::Scalar.html#Principal-author">Principal author</a>
              </li>
              <li>
                <a class="text-decoration-none" href="./Test::Builder::IO::Scalar.html#Other-contributors">Other contributors</a>
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          </ul>

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              <li>
                <a class="text-decoration-none" href="./Test::Builder::IO::Scalar.html#SEE-ALSO">SEE ALSO</a>
              </li>
          </ul>

      <h1 id="NAME"><a class="permalink" href="./Test::Builder::IO::Scalar.html#NAME">#</a>NAME</h1>

<p>Test::Builder::IO::Scalar - A copy of IO::Scalar for Test::Builder</p>

<h1 id="DESCRIPTION"><a class="permalink" href="./Test::Builder::IO::Scalar.html#DESCRIPTION">#</a>DESCRIPTION</h1>

<p>This is a copy of <a href="./IO::Scalar.html">IO::Scalar</a> which ships with <a href="./Test::Builder.html">Test::Builder</a> to support scalar references as filehandles on Perl 5.6. Newer versions of Perl simply use <code>open()</code>&#39;s built in support.</p>

<p><a href="./Test::Builder.html">Test::Builder</a> can not have dependencies on other modules without careful consideration, so its simply been copied into the distribution.</p>

<h1 id="COPYRIGHT-and-LICENSE"><a class="permalink" href="./Test::Builder::IO::Scalar.html#COPYRIGHT-and-LICENSE">#</a><a id="COPYRIGHT"></a>COPYRIGHT and LICENSE</h1>

<p>This file came from the &quot;IO-stringy&quot; Perl5 toolkit.</p>

<p>Copyright (c) 1996 by Eryq. All rights reserved. Copyright (c) 1999,2001 by ZeeGee Software Inc. All rights reserved.</p>

<p>This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.</p>

<h2 id="Construction"><a class="permalink" href="./Test::Builder::IO::Scalar.html#Construction">#</a>Construction</h2>

<dl>

<dt id="new-[ARGS...]"><a class="permalink" href="./Test::Builder::IO::Scalar.html#new-%5BARGS...%5D">#</a><a id="new"></a><a id="new-ARGS"></a>new [ARGS...]</dt>
<dd>

<p><i>Class method.</i> Return a new, unattached scalar handle. If any arguments are given, they&#39;re sent to open().</p>

</dd>
<dt id="open-[SCALARREF]"><a class="permalink" href="./Test::Builder::IO::Scalar.html#open-%5BSCALARREF%5D">#</a><a id="open"></a><a id="open-SCALARREF"></a>open [SCALARREF]</dt>
<dd>

<p><i>Instance method.</i> Open the scalar handle on a new scalar, pointed to by SCALARREF. If no SCALARREF is given, a &quot;private&quot; scalar is created to hold the file data.</p>

<p>Returns the self object on success, undefined on error.</p>

</dd>
<dt id="opened"><a class="permalink" href="./Test::Builder::IO::Scalar.html#opened">#</a>opened</dt>
<dd>

<p><i>Instance method.</i> Is the scalar handle opened on something?</p>

</dd>
<dt id="close"><a class="permalink" href="./Test::Builder::IO::Scalar.html#close">#</a>close</dt>
<dd>

<p><i>Instance method.</i> Disassociate the scalar handle from its underlying scalar. Done automatically on destroy.</p>

</dd>
</dl>

<h2 id="Input-and-output"><a class="permalink" href="./Test::Builder::IO::Scalar.html#Input-and-output">#</a><a id="Input"></a>Input and output</h2>

<dl>

<dt id="flush"><a class="permalink" href="./Test::Builder::IO::Scalar.html#flush">#</a>flush</dt>
<dd>

<p><i>Instance method.</i> No-op, provided for OO compatibility.</p>

</dd>
<dt id="getc"><a class="permalink" href="./Test::Builder::IO::Scalar.html#getc">#</a>getc</dt>
<dd>

<p><i>Instance method.</i> Return the next character, or undef if none remain.</p>

</dd>
<dt id="getline"><a class="permalink" href="./Test::Builder::IO::Scalar.html#getline">#</a>getline</dt>
<dd>

<p><i>Instance method.</i> Return the next line, or undef on end of string. Can safely be called in an array context. Currently, lines are delimited by &quot;\n&quot;.</p>

</dd>
<dt id="getlines"><a class="permalink" href="./Test::Builder::IO::Scalar.html#getlines">#</a>getlines</dt>
<dd>

<p><i>Instance method.</i> Get all remaining lines. It will croak() if accidentally called in a scalar context.</p>

</dd>
<dt id="print-ARGS..."><a class="permalink" href="./Test::Builder::IO::Scalar.html#print-ARGS...">#</a><a id="print"></a><a id="print-ARGS"></a>print ARGS...</dt>
<dd>

<p><i>Instance method.</i> Print ARGS to the underlying scalar.</p>

<p><b>Warning:</b> this continues to always cause a seek to the end of the string, but if you perform seek()s and tell()s, it is still safer to explicitly seek-to-end before subsequent print()s.</p>

</dd>
<dt id="read-BUF,-NBYTES,-[OFFSET]"><a class="permalink" href="./Test::Builder::IO::Scalar.html#read-BUF,-NBYTES,-%5BOFFSET%5D">#</a><a id="read"></a><a id="read-BUF-NBYTES-OFFSET"></a>read BUF, NBYTES, [OFFSET]</dt>
<dd>

<p><i>Instance method.</i> Read some bytes from the scalar. Returns the number of bytes actually read, 0 on end-of-file, undef on error.</p>

</dd>
<dt id="write-BUF,-NBYTES,-[OFFSET]"><a class="permalink" href="./Test::Builder::IO::Scalar.html#write-BUF,-NBYTES,-%5BOFFSET%5D">#</a><a id="write"></a><a id="write-BUF-NBYTES-OFFSET"></a>write BUF, NBYTES, [OFFSET]</dt>
<dd>

<p><i>Instance method.</i> Write some bytes to the scalar.</p>

</dd>
<dt id="sysread-BUF,-LEN,-[OFFSET]"><a class="permalink" href="./Test::Builder::IO::Scalar.html#sysread-BUF,-LEN,-%5BOFFSET%5D">#</a><a id="sysread"></a><a id="sysread-BUF-LEN-OFFSET"></a>sysread BUF, LEN, [OFFSET]</dt>
<dd>

<p><i>Instance method.</i> Read some bytes from the scalar. Returns the number of bytes actually read, 0 on end-of-file, undef on error.</p>

</dd>
<dt id="syswrite-BUF,-NBYTES,-[OFFSET]"><a class="permalink" href="./Test::Builder::IO::Scalar.html#syswrite-BUF,-NBYTES,-%5BOFFSET%5D">#</a><a id="syswrite"></a><a id="syswrite-BUF-NBYTES-OFFSET"></a>syswrite BUF, NBYTES, [OFFSET]</dt>
<dd>

<p><i>Instance method.</i> Write some bytes to the scalar.</p>

</dd>
</dl>

<h2 id="Seeking/telling-and-other-attributes"><a class="permalink" href="./Test::Builder::IO::Scalar.html#Seeking/telling-and-other-attributes">#</a><a id="Seeking"></a><a id="Seeking-telling-and-other-attributes"></a>Seeking/telling and other attributes</h2>

<dl>

<dt id="autoflush"><a class="permalink" href="./Test::Builder::IO::Scalar.html#autoflush">#</a>autoflush</dt>
<dd>

<p><i>Instance method.</i> No-op, provided for OO compatibility.</p>

</dd>
<dt id="binmode"><a class="permalink" href="./Test::Builder::IO::Scalar.html#binmode">#</a>binmode</dt>
<dd>

<p><i>Instance method.</i> No-op, provided for OO compatibility.</p>

</dd>
<dt id="clearerr"><a class="permalink" href="./Test::Builder::IO::Scalar.html#clearerr">#</a>clearerr</dt>
<dd>

<p><i>Instance method.</i> Clear the error and EOF flags. A no-op.</p>

</dd>
<dt id="eof"><a class="permalink" href="./Test::Builder::IO::Scalar.html#eof">#</a>eof</dt>
<dd>

<p><i>Instance method.</i> Are we at end of file?</p>

</dd>
<dt id="seek-OFFSET,-WHENCE"><a class="permalink" href="./Test::Builder::IO::Scalar.html#seek-OFFSET,-WHENCE">#</a><a id="seek"></a><a id="seek-OFFSET-WHENCE"></a>seek OFFSET, WHENCE</dt>
<dd>

<p><i>Instance method.</i> Seek to a given position in the stream.</p>

</dd>
<dt id="sysseek-OFFSET,-WHENCE"><a class="permalink" href="./Test::Builder::IO::Scalar.html#sysseek-OFFSET,-WHENCE">#</a><a id="sysseek"></a><a id="sysseek-OFFSET-WHENCE"></a>sysseek OFFSET, WHENCE</dt>
<dd>

<p><i>Instance method.</i> Identical to <code>seek OFFSET, WHENCE</code>, <i>q.v.</i></p>

</dd>
<dt id="tell"><a class="permalink" href="./Test::Builder::IO::Scalar.html#tell">#</a>tell</dt>
<dd>

<p><i>Instance method.</i> Return the current position in the stream, as a numeric offset.</p>

</dd>
<dt id="use_RS-[YESNO]"><a class="permalink" href="./Test::Builder::IO::Scalar.html#use_RS-%5BYESNO%5D">#</a><a id="use_RS"></a><a id="use_RS-YESNO"></a>use_RS [YESNO]</dt>
<dd>

<p><i>Instance method.</i> <b>Deprecated and ignored.</b> Obey the current setting of $/, like IO::Handle does? Default is false in 1.x, but cold-welded true in 2.x and later.</p>

</dd>
<dt id="setpos-POS"><a class="permalink" href="./Test::Builder::IO::Scalar.html#setpos-POS">#</a><a id="setpos"></a>setpos POS</dt>
<dd>

<p><i>Instance method.</i> Set the current position, using the opaque value returned by <code>getpos()</code>.</p>

</dd>
<dt id="getpos"><a class="permalink" href="./Test::Builder::IO::Scalar.html#getpos">#</a>getpos</dt>
<dd>

<p><i>Instance method.</i> Return the current position in the string, as an opaque object.</p>

</dd>
<dt id="sref"><a class="permalink" href="./Test::Builder::IO::Scalar.html#sref">#</a>sref</dt>
<dd>

<p><i>Instance method.</i> Return a reference to the underlying scalar.</p>

</dd>
</dl>

<h1 id="WARNINGS"><a class="permalink" href="./Test::Builder::IO::Scalar.html#WARNINGS">#</a>WARNINGS</h1>

<p>Perl&#39;s TIEHANDLE spec was incomplete prior to 5.005_57; it was missing support for <code>seek()</code>, <code>tell()</code>, and <code>eof()</code>. Attempting to use these functions with an IO::Scalar will not work prior to 5.005_57. IO::Scalar will not have the relevant methods invoked; and even worse, this kind of bug can lie dormant for a while. If you turn warnings on (via <code>$^W</code> or <code>perl -w</code>), and you see something like this...</p>

<pre><code class="plaintext">attempt to seek on unopened filehandle</code></pre>

<p>...then you are probably trying to use one of these functions on an IO::Scalar with an old Perl. The remedy is to simply use the OO version; e.g.:</p>

<pre><code>$SH-&gt;seek(0,0);    ### GOOD: will work on any 5.005
seek($SH,0,0);     ### WARNING: will only work on 5.005_57 and beyond</code></pre>

<h1 id="VERSION"><a class="permalink" href="./Test::Builder::IO::Scalar.html#VERSION">#</a>VERSION</h1>

<p>$Id: Scalar.pm,v 1.6 2005/02/10 21:21:53 dfs Exp $</p>

<h1 id="AUTHORS"><a class="permalink" href="./Test::Builder::IO::Scalar.html#AUTHORS">#</a>AUTHORS</h1>

<h2 id="Primary-Maintainer"><a class="permalink" href="./Test::Builder::IO::Scalar.html#Primary-Maintainer">#</a><a id="Primary"></a>Primary Maintainer</h2>

<p>David F. Skoll (<i>dfs@roaringpenguin.com</i>).</p>

<h2 id="Principal-author"><a class="permalink" href="./Test::Builder::IO::Scalar.html#Principal-author">#</a><a id="Principal"></a>Principal author</h2>

<p>Eryq (<i>eryq@zeegee.com</i>). President, ZeeGee Software Inc (<i>http://www.zeegee.com</i>).</p>

<h2 id="Other-contributors"><a class="permalink" href="./Test::Builder::IO::Scalar.html#Other-contributors">#</a><a id="Other"></a>Other contributors</h2>

<p>The full set of contributors always includes the folks mentioned in <a href="./IO::Stringy.html#CHANGE-LOG">&quot;CHANGE LOG&quot; in IO::Stringy</a>. But just the same, special thanks to the following individuals for their invaluable contributions (if I&#39;ve forgotten or misspelled your name, please email me!):</p>

<p><i>Andy Glew,</i> for contributing <code>getc()</code>.</p>

<p><i>Brandon Browning,</i> for suggesting <code>opened()</code>.</p>

<p><i>David Richter,</i> for finding and fixing the bug in <code>PRINTF()</code>.</p>

<p><i>Eric L. Brine,</i> for his offset-using read() and write() implementations.</p>

<p><i>Richard Jones,</i> for his patches to massively improve the performance of <code>getline()</code> and add <code>sysread</code> and <code>syswrite</code>.</p>

<p><i>B. K. Oxley (binkley),</i> for stringification and inheritance improvements, and sundry good ideas.</p>

<p><i>Doug Wilson,</i> for the IO::Handle inheritance and automatic tie-ing.</p>

<h1 id="SEE-ALSO"><a class="permalink" href="./Test::Builder::IO::Scalar.html#SEE-ALSO">#</a><a id="SEE"></a>SEE ALSO</h1>

<p><a href="./IO::String.html">IO::String</a>, which is quite similar but which was designed more-recently and with an IO::Handle-like interface in mind, so you could mix OO- and native-filehandle usage without using tied().</p>

<p><i>Note:</i> as of version 2.x, these classes all work like their IO::Handle counterparts, so we have comparable functionality to IO::String.</p>


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